topic Re: Y1 Wire Message - E103 Code in Nest Thermostats

Y1 Wire Message - E103 Code

bennyblanco — Sun, 14 Jul 2024 23:11:47 GMT

Google Community, I have a 3rd Gen Nest Learning Thermostat. Left for a trip, thermostat & A/C were working fine when I left. While I was gone there was a power outage at my complex. When I returned home, when I tried to turn A/C on I got the message "Your thermostat has detected a problem with the Y1 wire" (E103 error code). Checked Google help and even stripped the old end of the Y1 wire and inserted a new length of wire in the Y1 slot. Still getting the same error message, A/C still not working. Anybody have any idea why this is happening? Help would be greatly appreciated. As I say, Thermostat & A/C were working fine before I left. Does system need to be reset? Please help!

Re: Y1 Wire Message - E103 Code

JAllen90 — Tue, 16 Jul 2024 05:56:04 GMT

Same issue.

Re: Y1 Wire Message - E103 Code

AxelD — Wed, 17 Jul 2024 18:03:22 GMT

Hi bennyblancom

Thanks for posting in the community! Sorry to hear that you're getting the error E103 on your Nest Thermostat after the power outage. No worries, help is here! Let's try some troubleshooting steps:

Press and hold the Nest Thermostat display for 20 seconds. When the Nest Thermostat reboots, it should return to the thermostat screen and continue normal operation.
If reboot doesn't work. Remove your thermostat from your account.
Perform a Factory Reset. Go to Settings > Reset > All Settings.

Let me know how it goes.

Regards,

Axel.

Re: Y1 Wire Message - E103 Code

Bayougurl — Thu, 08 Aug 2024 23:51:19 GMT

Sadly, It didn't work for me. Still showering error with Y1 wire.

Re: Y1 Wire Message - E103 Code

Bayougurl — Thu, 08 Aug 2024 23:52:33 GMT

Still showing.....

Re: Y1 Wire Message - E103 Code

AxelD — Mon, 12 Aug 2024 00:23:36 GMT

Hi Bayougurl,

Thanks for posting in the Community! Sorry to hear that you’re getting the E103 error code on your Nest Thermostat and the troubleshooting steps above didn’t work for you. No worries, help is here! To help you troubleshoot this further, please fill out this form. An agent will contact you shortly with next steps.

Please let us know once you've submitted the form.

Regards,
Axel.

Re: Y1 Wire Message - E103 Code

AxelD — Wed, 14 Aug 2024 00:33:19 GMT

Hi Bayougurl,

We we haven’t seen your form submission come through. Were you able to access it alright?

Let us know if you’re running into trouble or still need our help!

Regards,

Axel.